Regulating Multifunctional Oxygen Vacancies for Plasma‐Driven Air‐to‐Ammonia Conversion
Year: 2025
Type: article
Abstract: Current ammonia (NH₃) synthesis is hindered by challenges including N₂ activation, NH₃ separation and process complexity. Here, we report a plasma‐electrochemical process for the production of gaseous ammonia from air generated NO x , decoupled from processes employing liquid phase intermediaries such as NO₃⁻ and final product (NH 4 + ). Importantly, this process uses air for scalable ammonia production under ambient conditions and directly produces gaseous NH₃ which facilitates efficient product separation. For NO x reduction to NH₃, we propose a universal strategy combining plasma pretreatment and wet chemical calcination to introduce multifunctional oxygen vacancies. The resulting highly defective Fe₂O₃ nanoparticles on Cu achieves a significant ammonia production rate of 628 nmol·s⁻¹·cm⁻ 2 , along with nearly 100% faradaic efficiency.
Source: Angewandte Chemie
Authors: Wanping Xu, Jiaqian Wang, Tianqi Zhang, Jungmi Hong, Qiang Song, Zhongkang Han, Patrick Cullen
Institutions: The University of Sydney, Zhejiang University
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,790
OpenAlex ID: W4409664623